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Modulation space and its applications to PDEs

Research Project

Project/Area Number 16K17606
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Basic analysis
Research InstitutionHokkaido University

Principal Investigator

Kobayashi Masaharu  北海道大学, 理学研究院, 准教授 (30516480)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywordsモジュレーション空間 / ウィナーアマルガム空間 / 作用関数 / 波面集合 / 分散型方程式 / シュレディンガー方程式 / エアリー方程式 / ウィーナーアマルガム空間 / 波束変換 / フーリエ級数 / 実関数論
Outline of Final Research Achievements

Throughtout this project, we studied the basic properties of modulation space and its applications to PDEs. Especially, we obtain the followings (1) We obtained the charazterization of operatinig function on modulation spaces (2) We gave a characterization of Sobolev-type wave-front sets by using the wavepacket transform (3) We obtained the estimates for the higher order dispersive operators on modulation spaces.

Academic Significance and Societal Importance of the Research Achievements

今回の研究を通じて解決できた問題以外にも解決しなければならないような(基礎的ではあるが重要な)モジュレーション空間に関する問題はまだまだ多く残っている。しかし、今回得られた研究成果はモジュレーション空間の研究において更なる成果を挙げる研究の足掛かりになることが期待できる。特に、空間変数だけではなく、時間変数を考慮した短時間フーリエ変換を用いる方法が高階の分散型方程式にも応用可能であることが示せたことや副産物として得られる斉次型モジュレーション空間は今後、調和解析に現れるさまざまな作用素の研究に応用可能であると思われる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results) Book (1 results)

  • [Journal Article] Operating functions on modulation and Wiener amalgam spaces2018

    • Author(s)
      M.Kobayashi, E.Sato
    • Journal Title

      Nagoya Math. J.

      Volume: 230 Pages: 72-82

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Remark on characterization of wave front set by wave packet transform2017

    • Author(s)
      Keiichi Kato, Masaharu Kobayashi, Shingo Ito
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 印刷中

    • NAID

      120006312703

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Operating functions on modulation and Wiener amalgam spaces2017

    • Author(s)
      Masaharu Kobayashi, Enji Sato
    • Journal Title

      Nagoya Mathematical Journal

      Volume: 印刷中

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Representation of Airy evolution operator via Short-time Fourier transform2017

    • Author(s)
      小林政晴
    • Organizer
      第9回 名古屋微分方程式研究集会
    • Place of Presentation
      名古屋大学(愛知県・名古屋市)
    • Year and Date
      2017-03-21
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Representation of Airy evolution operator via short-time Fourier transform and its applicatio2017

    • Author(s)
      K.Kato, M.Kobayashi, S.Ito, T.Takahashi
    • Organizer
      Harmonic Analysis and its Applications in Tokyo 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Operating functions on modulation and Wiener amalgam spaces2016

    • Author(s)
      Masaharu Kobayashi
    • Organizer
      Harmonic Analysis and its Applications in Beijing 2016
    • Place of Presentation
      北京市(中華人民共和国)
    • Year and Date
      2016-09-29
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Operating functions on modulation and Wiener amalgam spaces2016

    • Author(s)
      Masaharu Kobayashi
    • Organizer
      Harmonic Analysis and its Applications in Matsumoto 2016, summer
    • Place of Presentation
      信州大学(長野県・松本市)
    • Year and Date
      2016-08-24
    • Related Report
      2016 Research-status Report
    • Invited
  • [Book] ルベーグ積分 要点と演習2018

    • Author(s)
      相川 弘明、小林 政晴
    • Total Pages
      256
    • Publisher
      共立出版
    • ISBN
      9784320113411
    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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